Stalker

Investigators at Harvard’s School of Engineering and Applied Sciences have created strange optical effects, including corkscrew-like vortex beams, by reflecting light off a flat, nanostructured surface. Credit: Nanfang Yu, SEAS. Check ’em out: How Apple could revolutionize solar Flight time of Stalker small UAS quadrupled to 8 hours with ruggedized propane SOFC From a flat…